Zirconium phosphate particles, basic gas deodorant using the same, and production method thereof

Patent metadata

Field	Value
Publication number	US-12371323-B2
Application number	US-202117910097-A
Country	US
Kind code	B2
Filing date	Mar 4, 2021
Priority date	Mar 13, 2020
Publication date	Jul 29, 2025
Grant date	Jul 29, 2025

Abstract

Provided are zirconium phosphate particles, obtained by bringing α-zirconium phosphate particles into contact with a basic liquid having a pH of 9 or higher and then further bringing the particles into contact with an acidic liquid having a pH of 6 or lower, or zirconium phosphate particles, in which, after leaving for 10 minutes from putting 10 mg of zirconium phosphate particles and 3 L of air that contains 1,000 ppm of an ammonia gas into a test bag at normal temperature and normal pressure, an ammonia gas reduction rate within the test bag that contains the zirconium phosphate particles is 50% or more.

First claim

What is claimed is:

1. Zirconium phosphate particles, obtained by bringing α-zirconium phosphate particles into contact with a basic liquid having a pH of 9 or higher and then further bringing the particles into contact with an acidic liquid having a pH of 6 or lower.

2. The zirconium phosphate particles according to claim 1 , wherein the basic liquid comprises at least one of an alkali metal or an alkaline earth metal.

3. Zirconium phosphate particles, wherein, after leaving for 10 minutes from putting 10 mg of zirconium phosphate particles and 3 L of air that contains 1,000 ppm of an ammonia gas into a test bag at normal temperature and normal pressure, an ammonia gas reduction rate (X; unit %) represented by Formula (1) below within the test bag that contains the zirconium phosphate particles is 50% or more:
X ={( A 0 −A 1 )/ A 0 )}×100  Formula (1):

wherein, in Formula (1), A 0 means an ammonia gas concentration in the test bag that does not contain zirconium phosphate particles, and A 1 means an ammonia gas concentration in the test bag that contains the zirconium phosphate particles.

4. The zirconium phosphate particles according to claim 1 , wherein a median diameter of primary particles is from 0.1 to 10 μm.

5. The zirconium phosphate particles according to claim 1 , wherein a dry reduction rate (Y; unit % by weight) represented by Formula (2) below after heating at 150° C. for 2 hours is 5.0% by weight or less:
Y ={( B 0 −B 1 )/ B 0 }×100  Formula (2):

wherein, in Formula (2), B 0 means a weight of the zirconium phosphate particles before heating, and B 1 means a weight of the zirconium phosphate particles after heating.

6. A basic gas deodorant, comprising the zirconium phosphate particles according to claim 1 .

7. A basic gas deodorant for fibers, the deodorant comprising the zirconium phosphate particles according to claim 1 .

8. A basic gas deodorant for fiber kneading, the deodorant comprising the zirconium phosphate particles according to claim 1 .

9. A composition for basic gas deodorizing processing, the composition comprising the zirconium phosphate particles according to claim 1 .

10. A basic gas deodorizing resin composition, the composition comprising the zirconium phosphate particles according to claim 1 .

11. Basic gas deodorizing fibers, comprising the zirconium phosphate particles according to claim 1 .

12. The basic gas deodorizing fibers according to claim 11 , comprising at least one fiber selected from the group consisting of polyester, polyurethane, nylon, rayon, cotton, acryl, aramid, vinylon, polyethylene and polypropylene.

13. A method of producing the zirconium phosphate particles according to claim 1 , the method comprising bringing α-zirconium phosphate particles into contact with a basic liquid having a pH of 9 or higher and then further bringing the particles into contact with an acidic liquid having a pH of 6 or lower.

14. The method of producing zirconium phosphate particles according to claim 13 , wherein the basic liquid comprises at least one of an alkali metal or an alkaline earth metal.

15. A method of producing a basic gas deodorizing resin composition, the method comprising mixing the zirconium phosphate particles obtained by the production method according to claim 13 and a resin.

16. A method of producing basic gas deodorizing fibers, the method comprising spinning the basic gas deodorizing resin composition obtained by the production method according to claim 15 .

17. A method of producing a basic gas deodorizing resin composition, the method comprising bringing a resin that comprises zirconium phosphate particles into contact with a basic liquid having a pH of 9 or higher and then bringing the resin into contact with an acidic liquid having a pH of 6 or lower.

18. The method of producing a basic gas deodorizing resin composition according to claim 17 , wherein the zirconium phosphate particles are zirconium phosphate particles, obtained by bringing α-zirconium phosphate particles into contact with a basic liquid having a pH of 9 or higher and then further bringing the particles into contact with an acidic liquid having a pH of 6 or lower.

19. A method of producing basic gas deodorizing fibers, the method comprising bringing fibers that include zirconium phosphate particles into contact with a basic liquid having a pH of 9 or higher and then bringing the fibers into contact with an acidic liquid having a pH of 6 or lower.

20. The method of producing basic gas deodorizing fibers according to claim 19 , wherein the zirconium phosphate particles are zirconium phosphate particles, obtained by bringing α-zirconium phosphate particles into contact with a basic liquid having a pH of 9 or higher and then further bringing the particles into contact with an acidic liquid having a pH of 6 or lower.

Assignees

• Toagosei Co Ltd

Inventors

• Yamada Yoshinao
• Sogou Tatsuya
• Kumagai Shinya

Classifications

• D06M11/71

  Salts of phosphoric acids · CPC title

• C08L75/06

  from polyesters · CPC title

• A61L9/01

  Deodorant compositions {(compositions released by contact with a liquid A61L9/05)} · CPC title

• C01P2004/62

  Submicrometer sized, i.e. from 0.1-1 micrometer · CPC title

• C01P2004/61

  Micrometer sized, i.e. from 1-100 micrometer · CPC title